S-91375A822 5/8"-18 x 2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
• Precise Class 3A thread fit ensures tight tolerances and reliable seating in critical applications
• High-strength alloy steel construction with Rockwell C45 hardness provides exceptional load-bearing capacity
• Secure hex drive installation with 5/16" drive size prevents stripping during high-torque applications
• Fine UNF thread profile delivers enhanced vibration resistance and superior holding power
• Cup tip design creates positive engagement with minimal surface damage to components
• Headless configuration enables flush mounting in space-constrained assemblies

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers exceptional performance in demanding industrial applications where vibration resistance and precise positioning are critical. The 5/8"-18 UNF fine threads with Class 3A fit provide superior holding power in machinery, automotive components, and precision equipment assemblies. The headless design with hex drive allows for flush installation in confined spaces while maintaining accessibility for adjustment. The cup tip configuration minimizes surface marring while ensuring positive contact with shafts, collars, and other rotating components. Engineered to withstand high-stress environments, this set screw offers reliable fastening solutions for manufacturing, maintenance, and assembly operations requiring consistent performance under heavy loads.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3A thread fit precision and UNF thread specifications. Complies with ASME B18.3 manufacturing standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features Rockwell C45 hardness for consistent mechanical properties and dimensional stability across production batches.